2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d

Analysis

max time kernel
122s
max time network
51s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 20:41

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General

Target
2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
Size 3.3MB
Sample240613-zgek1stdnp
SHA256 2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d
MD5 d336e8ffc7a78ce4a160d027a93bd51f
SHA1 ebd28db3ae7b39ad420d95b11fe7804ce2026ab0
SHA512 b5a37346a9231a61e08513feb769323fbe622f682e20b74dc556482c72842ad19c9b5e567c84f5d5b7fc01d0fe81a5790f2ea81776217b3b85aeb15f08ed1dff
SSDEEP 98304:g2mDc2mDMmD2mDe2mDMmD2mDc2mDMmD2mD6:g2mDc2mDMmD2mDe2mDMmD2mDc2mDMmDI
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	hosts.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	avscan.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	avscan.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	hosts.exe

Adds policy Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\BVRKIPTS = "W_X_C.bat"	WScript.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\BVRKIPTS = "W_X_C.bat"	WScript.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\BVRKIPTS = "W_X_C.bat"	WScript.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 6 IoCs

pid	Process
772	avscan.exe
4044	avscan.exe
3668	hosts.exe
2732	hosts.exe
3640	avscan.exe
4780	hosts.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\avscan = "C:\\Users\\Admin\\AppData\\Local\\Temp\\avscan.exe"	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\avscan = "C:\\Users\\Admin\\AppData\\Local\\Temp\\avscan.exe"	avscan.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\avscan = "C:\\Users\\Admin\\AppData\\Local\\Temp\\avscan.exe"	hosts.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\hosts.exe	hosts.exe
File created	C:\windows\W_X_C.vbs	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
File created	\??\c:\windows\W_X_C.bat	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
File opened for modification	C:\Windows\hosts.exe	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
File opened for modification	C:\Windows\hosts.exe	avscan.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings	cmd.exe

Modifies registry key 1 TTPs 9 IoCs

Modify Registry

T1112

pid	Process
2868	REG.exe
4204	REG.exe
1124	REG.exe
1128	REG.exe
2196	REG.exe
1964	REG.exe
3920	REG.exe
3316	REG.exe
4436	REG.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
772	avscan.exe
3668	hosts.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
772	avscan.exe
4044	avscan.exe
3668	hosts.exe
2732	hosts.exe
3640	avscan.exe
4780	hosts.exe

Suspicious use of WriteProcessMemory 63 IoCs

description	pid	Process	procid_target
PID 4348 wrote to memory of 2868	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	82
PID 4348 wrote to memory of 2868	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	82
PID 4348 wrote to memory of 2868	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	82
PID 4348 wrote to memory of 772	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	84
PID 4348 wrote to memory of 772	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	84
PID 4348 wrote to memory of 772	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	84
PID 772 wrote to memory of 4044	772	avscan.exe	85
PID 772 wrote to memory of 4044	772	avscan.exe	85
PID 772 wrote to memory of 4044	772	avscan.exe	85
PID 772 wrote to memory of 4012	772	avscan.exe	87
PID 772 wrote to memory of 4012	772	avscan.exe	87
PID 772 wrote to memory of 4012	772	avscan.exe	87
PID 4348 wrote to memory of 4660	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	88
PID 4348 wrote to memory of 4660	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	88
PID 4348 wrote to memory of 4660	4348	2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe	88
PID 4660 wrote to memory of 3668	4660	cmd.exe	92
PID 4660 wrote to memory of 3668	4660	cmd.exe	92
PID 4660 wrote to memory of 3668	4660	cmd.exe	92
PID 4012 wrote to memory of 2732	4012	cmd.exe	93
PID 4012 wrote to memory of 2732	4012	cmd.exe	93
PID 4012 wrote to memory of 2732	4012	cmd.exe	93
PID 3668 wrote to memory of 3640	3668	hosts.exe	95
PID 3668 wrote to memory of 3640	3668	hosts.exe	95
PID 3668 wrote to memory of 3640	3668	hosts.exe	95
PID 4660 wrote to memory of 1004	4660	cmd.exe	96
PID 4660 wrote to memory of 1004	4660	cmd.exe	96
PID 4660 wrote to memory of 1004	4660	cmd.exe	96
PID 3668 wrote to memory of 3536	3668	hosts.exe	97
PID 3668 wrote to memory of 3536	3668	hosts.exe	97
PID 3668 wrote to memory of 3536	3668	hosts.exe	97
PID 4012 wrote to memory of 3924	4012	cmd.exe	98
PID 4012 wrote to memory of 3924	4012	cmd.exe	98
PID 4012 wrote to memory of 3924	4012	cmd.exe	98
PID 3536 wrote to memory of 4780	3536	cmd.exe	100
PID 3536 wrote to memory of 4780	3536	cmd.exe	100
PID 3536 wrote to memory of 4780	3536	cmd.exe	100
PID 3536 wrote to memory of 208	3536	cmd.exe	101
PID 3536 wrote to memory of 208	3536	cmd.exe	101
PID 3536 wrote to memory of 208	3536	cmd.exe	101
PID 772 wrote to memory of 4436	772	avscan.exe	106
PID 772 wrote to memory of 4436	772	avscan.exe	106
PID 772 wrote to memory of 4436	772	avscan.exe	106
PID 3668 wrote to memory of 4204	3668	hosts.exe	108
PID 3668 wrote to memory of 4204	3668	hosts.exe	108
PID 3668 wrote to memory of 4204	3668	hosts.exe	108
PID 772 wrote to memory of 1124	772	avscan.exe	115
PID 772 wrote to memory of 1124	772	avscan.exe	115
PID 772 wrote to memory of 1124	772	avscan.exe	115
PID 3668 wrote to memory of 1128	3668	hosts.exe	117
PID 3668 wrote to memory of 1128	3668	hosts.exe	117
PID 3668 wrote to memory of 1128	3668	hosts.exe	117
PID 772 wrote to memory of 2196	772	avscan.exe	119
PID 772 wrote to memory of 2196	772	avscan.exe	119
PID 772 wrote to memory of 2196	772	avscan.exe	119
PID 3668 wrote to memory of 1964	3668	hosts.exe	121
PID 3668 wrote to memory of 1964	3668	hosts.exe	121
PID 3668 wrote to memory of 1964	3668	hosts.exe	121
PID 772 wrote to memory of 3920	772	avscan.exe	123
PID 772 wrote to memory of 3920	772	avscan.exe	123
PID 772 wrote to memory of 3920	772	avscan.exe	123
PID 3668 wrote to memory of 3316	3668	hosts.exe	125
PID 3668 wrote to memory of 3316	3668	hosts.exe	125
PID 3668 wrote to memory of 3316	3668	hosts.exe	125

C:\Users\Admin\AppData\Local\Temp\2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe
"C:\Users\Admin\AppData\Local\Temp\2588affbe5cffe553d9bdb55309107d18eee2a417fd39f68f3e97ce4477aba7d.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4348
- C:\Windows\SysWOW64\REG.exe
  REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
  2⤵
  - Modifies registry key
  PID:2868
- C:\Users\Admin\AppData\Local\Temp\avscan.exe
  C:\Users\Admin\AppData\Local\Temp\avscan.exe
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:772
- - C:\Users\Admin\AppData\Local\Temp\avscan.exe
    C:\Users\Admin\AppData\Local\Temp\avscan.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:4044
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
    3⤵
    - Checks computer location settings
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:4012
  - - C:\windows\hosts.exe
      C:\windows\hosts.exe
      4⤵
      Executes dropped EXE
      Suspicious use of SetWindowsHookEx
      PID:2732
  - - C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
      4⤵
      Adds policy Run key to start application
      PID:3924
- - C:\Windows\SysWOW64\REG.exe
    REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
    3⤵
    - Modifies registry key
    PID:4436
- - C:\Windows\SysWOW64\REG.exe
    REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
    3⤵
    - Modifies registry key
    PID:1124
- - C:\Windows\SysWOW64\REG.exe
    REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
    3⤵
    - Modifies registry key
    PID:2196
- - C:\Windows\SysWOW64\REG.exe
    REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
    3⤵
    - Modifies registry key
    PID:3920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4660
- - C:\windows\hosts.exe
    C:\windows\hosts.exe
    3⤵
    - Modifies visibility of file extensions in Explorer
    - Modifies visiblity of hidden/system files in Explorer
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Windows directory
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3668
  - - C:\Users\Admin\AppData\Local\Temp\avscan.exe
      C:\Users\Admin\AppData\Local\Temp\avscan.exe
      4⤵
      Executes dropped EXE
      Suspicious use of SetWindowsHookEx
      PID:3640
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
      4⤵
      Checks computer location settings
      Modifies registry class
      Suspicious use of WriteProcessMemory
      PID:3536
    - - C:\windows\hosts.exe
        
        C:\windows\hosts.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:4780
    - - C:\Windows\SysWOW64\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
        5⤵
        Adds policy Run key to start application
        
        PID:208
  - - C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      4⤵
      Modifies registry key
      PID:4204
  - - C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      4⤵
      Modifies registry key
      PID:1128
  - - C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      4⤵
      Modifies registry key
      PID:1964
  - - C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      4⤵
      Modifies registry key
      PID:3316
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
    3⤵
    - Adds policy Run key to start application
    PID:1004

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

avscan.exe

Path C:\Users\Admin\AppData\Local\Temp\avscan.exe
Size 3.3MB
SHA256 75c867c7b3eb499c444d61b7751eb7625eb9bd8dcc04e9def18d114786ae2bf3
MD5 49f21a70acff2d37d5da7ff8e7e9f0f9
SHA1 03d5a7814f58684ab1256b30305032e46096013c
SHA512 2194d781c307796e25cd77e6d9e454d0f1e591ef6183ff5b09e39ee8daf877df9cb19fa7cbed77b95b05a77f47a0c211389c7b8c8526194ca2636d210695a3d7
SSDEEP 98304:g2mDc2mDMmD2mDe2mDMmD2mDc2mDMmD2mDr:g2mDc2mDMmD2mDe2mDMmD2mDc2mDMmD5
MD5 SHA1 SHA512 SSDEEP

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W_X_C.vbs

Path C:\Windows\W_X_C.vbs
Size 195B
SHA256 9676e777e8eec50aa91525d3c0ed7c17047ddf363cb28a83a474c2840cd4c7b1
MD5 2bf5a187f48b0e3c967d35345b39cf75
SHA1 5dc7cfa3b9818baa039314fd49d38825a88f30f2
SHA512 1f0c2d5fadc2304f910caf7569a968b1824687cb57dd8f470dc67b8262cb009809c83ea626f2f99d9ce4e8113efb46c53b979f6dc3113433f7503ca4d119e16c
MD5 SHA1 SHA512

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hosts.exe

Path C:\Windows\hosts.exe
Size 3.3MB
SHA256 8dab7b013c49ebf96acfc1da7c58b9c3958eca26366bc6e6b905088bf107354b
MD5 2345aaaae6635bdb7670ce3253a5e537
SHA1 d607362f09da2a456fd06ff55ffcab69f4e24b65
SHA512 e1e81b28cf285491b38cecfde39938b9e1a97b118de9dc6ed51d0c721972396402b4f11a44da397d0ebc3003a894f13fb494bbb0454c803bf66ace65545d502f
SSDEEP 98304:g2mDc2mDMmD2mDe2mDMmD2mDc2mDMmD2mDU:g2mDc2mDMmD2mDe2mDMmD2mDc2mDMmDC
MD5 SHA1 SHA512 SSDEEP

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W_X_C.bat

Path \??\c:\windows\W_X_C.bat
Size 336B
SHA256 d2150b9e5a4ce55e140f0ca91c4e300715d42095c8fddf58c77037cdd2cfaf78
MD5 4db9f8b6175722b62ececeeeba1ce307
SHA1 3b3ba8414706e72a6fa19e884a97b87609e11e47
SHA512 1d6dc274cf7a3dd704f840e6a5ad57ab4c4e35d5f09489aeff520bb797e1c825bac53fc335156fe41e767a46520d031855fe42fe7b175409ebe5e9e986fb9b8b
MD5 SHA1 SHA512

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads